LI 导航

<div class="my_nav">
            <ul>
                <li class="tiao cur" id="order_tab_1"><a href="#">待付款</a></li>
                <li class="tiao " id="order_tab_2"><a href="#">待收货/提货</a></li>
                <li class="tiao " id="order_tab_3"><a href="#">全部订单</a></li>
            </ul>
        </div>
        

        .my_nav {
            width: 100%;
            border: 1px solid #e0e0e0;
            border-width: 1px 0;
            background-color: #fff;
            -webkit-box-sizing: border-box;
            box-sizing: border-box;
        }
        .my_nav ul {
            display: box;
            display: -ms-box;
            display: -webkit-box;
            display: flex;
            display: -ms-flexbox;
            display: -webkit-flex;
            overflow: hidden;
        }
        .my_nav li.cur {
            background-color: #E5E5E5;
        }
        .my_nav li:first-child {
            border-left: 0;
        }
        .my_nav li {
            display: block;
            flex: 1;
            -ms-flex: 1;
            -webkit-flex: 1;
            box-flex: 1;
            -ms-box-flex: 1;
            -webkit-box-flex: 1;
            width: 100px;
            text-align: center;
            font-size: 12px;
            line-height: 36px;
            border-left: 1px solid #e0e0e0;
            padding: 0px;
            background-color: #f3f3f3;
        }
        .my_nav a {
            display: block;
            min-height: 36px;
        }
        a {
            border-bottom-color: #cccccc;
            border-bottom-style: none;
            COLOR: #888888;
            text-decoration: none;
            font-family: "Microsoft Yahei",Arial, Helvetica, sans-serif;
            outline: none;
        }